1211110011311 has 8 divisors (see below), whose sum is σ = 1276777611264. Its totient is φ = 1147104882360.

The previous prime is 1211110011301. The next prime is 1211110011323. The reversal of 1211110011311 is 1131100111121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211110011311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211110011301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415616255 + ... + 415619168.

It is an arithmetic number, because the mean of its divisors is an integer number (159597201408).

Almost surely, 2^{1211110011311} is an apocalyptic number.

1211110011311 is a deficient number, since it is larger than the sum of its proper divisors (65667599953).

1211110011311 is an equidigital number, since it uses as much as digits as its factorization.

1211110011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831235501.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 1211110011311 its reverse (1131100111121), we get a palindrome (2342210122432).

The spelling of 1211110011311 in words is "one trillion, two hundred eleven billion, one hundred ten million, eleven thousand, three hundred eleven".